name	taipower-indoor-wiring-ampacity
description	This skill should be used when calculating or verifying the allowable ampacity (current-carrying capacity) of indoor electrical wiring and conduit fill limits according to the Taipower Indoor Wiring Regulations (屋內線路裝置規則).
metadata	{"class":"B"}

Taipower Indoor Wiring Ampacity & Conduit Fill

Context & Purpose

This skill encodes the regulations for indoor electrical wiring (屋內線路裝置規則) specifically focusing on the allowable ampacity of wires inside conduits (PVC or Metal) and ambient temperature corrections.

Parameters & Tables (Based on Article 16)

1. Baseline Conditions

Standard Ambient Temperature: 35°C
Standard Conductor Insulation Temp: 60°C (e.g., PVC), 75°C (e.g., XLPE/PE), or 90°C.
Wire Material: Copper (銅)

2. Ampacity for PVC Wire in Conduit (60°C Insulation, 35°C Ambient) - Partial Table (Table 16-7)

Wire Size (mm²)	Ampacity for ≤ 3 wires	Ampacity for 4 wires	Ampacity for 5-6 wires
2.0 mm (Solid)	19 A	16 A	14 A
3.5 mm²	19 A	16 A	14 A
5.5 mm²	25 A	23 A	20 A
8 mm²	33 A	30 A	25 A
14 mm²	50 A	40 A	35 A
22 mm²	60 A	55 A	50 A
38 mm²	85 A	75 A	65 A
50 mm²	100 A	90 A	80 A
100 mm²	160 A	150 A	125 A

(Note: Neutral wire, grounding wire, and control wires are generally not counted in the "number of wires" for ampacity derating, unless harmonics are present).

3. Voltage Drop (Article 9)

Feeder + Branch Circuit: Total voltage drop must not exceed 5% of the nominal voltage.
Feeder only or Branch only: Voltage drop must not exceed 3%.

Execution Logic for AI

When reviewing a single-line diagram (單線圖) or wiring schedule:

Identify the wire size (e.g., 8 mm²) and the number of current-carrying conductors in the conduit.
Cross-reference with the ampacity table to find the maximum allowed current.
Compare the allowed current with the specified breaker size (AT/AF). The wire's ampacity must be ≧ the breaker's trip setting (AT), with exceptions for motor loads.
Verify voltage drop calculations do not exceed 3% for branches or 5% total.

Taipower Indoor Wiring Ampacity & Conduit Fill

Context & Purpose

Parameters & Tables (Based on Article 16)

1. Baseline Conditions

Standard Ambient Temperature: 35°C

Standard Conductor Insulation Temp: 60°C (e.g., PVC), 75°C (e.g., XLPE/PE), or 90°C.

Wire Material: Copper (銅)

2. Ampacity for PVC Wire in Conduit (60°C Insulation, 35°C Ambient) - Partial Table (Table 16-7)

Wire Size (mm²)

Ampacity for ≤ 3 wires

Ampacity for 4 wires

Ampacity for 5-6 wires

2.0 mm (Solid)

19 A

16 A

14 A

3.5 mm²

19 A

16 A

14 A

5.5 mm²

25 A

23 A

20 A

8 mm²

33 A

30 A

25 A

14 mm²

50 A

40 A

35 A

22 mm²

60 A

55 A

50 A

38 mm²

85 A

75 A

65 A

50 mm²

100 A

90 A

80 A

100 mm²

160 A

150 A

125 A

(Note: Neutral wire, grounding wire, and control wires are generally not counted in the "number of wires" for ampacity derating, unless harmonics are present).

3. Voltage Drop (Article 9)

Feeder + Branch Circuit: Total voltage drop must not exceed 5% of the nominal voltage.

Feeder only or Branch only: Voltage drop must not exceed 3%.

Execution Logic for AI

When reviewing a single-line diagram (單線圖) or wiring schedule:

Identify the wire size (e.g., 8 mm²) and the number of current-carrying conductors in the conduit.

Cross-reference with the ampacity table to find the maximum allowed current.

Compare the allowed current with the specified breaker size (AT/AF). The wire's ampacity must be ≧ the breaker's trip setting (AT), with exceptions for motor loads.

Verify voltage drop calculations do not exceed 3% for branches or 5% total.

taipower-indoor-wiring-ampacity